From be408247f1c1ff8ccf7ab128b126f54d19bd4392 Mon Sep 17 00:00:00 2001
From: Michael Buch <michaelbuch12@gmail.com>
Date: Sat, 2 Feb 2019 14:20:52 +0000
Subject: [PATCH] Port the copyurl patch to the 0.8.1 st release. Mainly fix 
 usage of depracted selcopy

---
 config.def.h |  1 +
 st.c         | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 st.h         |  1 +
 3 files changed, 64 insertions(+)

diff --git a/config.def.h b/config.def.h
index 82b1b09..cbe923e 100644
--- a/config.def.h
+++ b/config.def.h
@@ -178,6 +178,7 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
 	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
 	{ TERMMOD,              XK_I,           iso14755,       {.i =  0} },
+	{ MODKEY,               XK_l,           copyurl,        {.i =  0} },
 };
 
 /*
diff --git a/st.c b/st.c
index 46c954b..476eb31 100644
--- a/st.c
+++ b/st.c
@@ -2616,3 +2616,65 @@ redraw(void)
 	tfulldirt();
 	draw();
 }
+
+/* select and copy the previous url on screen (do nothing if there's no url).
+ * known bug: doesn't handle urls that span multiple lines (wontfix)
+ * known bug: only finds first url on line (mightfix)
+ */
+void
+copyurl(const Arg *arg) {
+	/* () and [] can appear in urls, but excluding them here will reduce false
+	 * positives when figuring out where a given url ends.
+	 */
+	static char URLCHARS[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+		"abcdefghijklmnopqrstuvwxyz"
+		"0123456789-._~:/?#@!$&'*+,;=%";
+
+	int i, row, startrow;
+	char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */
+	char *c, *match = NULL;
+
+	row = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.y-1 : term.bot;
+	LIMIT(row, term.top, term.bot);
+	startrow = row;
+
+	/* find the start of the last url before selection */
+	do {
+		for (i = 0; i < term.col; ++i) {
+			if (term.line[row][i].u > 127) /* assume ascii */
+				continue;
+			linestr[i] = term.line[row][i].u;
+		}
+		linestr[term.col] = '\0';
+		if ((match = strstr(linestr, "http://"))
+				|| (match = strstr(linestr, "https://")))
+			break;
+		if (--row < term.top)
+			row = term.bot;
+	} while (row != startrow);
+
+	if (match) {
+		/* must happen before trim */
+		selclear();
+		sel.ob.x = strlen(linestr) - strlen(match);
+
+		/* trim the rest of the line from the url match */
+		for (c = match; *c != '\0'; ++c)
+			if (!strchr(URLCHARS, *c)) {
+				*c = '\0';
+				break;
+			}
+
+		/* select and copy */
+		sel.mode = 1;
+		sel.type = SEL_REGULAR;
+		sel.oe.x = sel.ob.x + strlen(match)-1;
+		sel.ob.y = sel.oe.y = row;
+		selnormalize();
+		tsetdirt(sel.nb.y, sel.ne.y);
+		xsetsel(getsel());
+		xclipcopy();
+	}
+
+	free(linestr);
+}
diff --git a/st.h b/st.h
index dac64d8..5a58f8f 100644
--- a/st.h
+++ b/st.h
@@ -85,6 +85,7 @@ void printscreen(const Arg *);
 void printsel(const Arg *);
 void sendbreak(const Arg *);
 void toggleprinter(const Arg *);
+void copyurl(const Arg *);
 
 int tattrset(int);
 void tnew(int, int);
-- 
2.20.1

